Display state change event data (event.display.*)
Defined in SDL_events.h
typedef struct SDL_DisplayEvent
{/**< SDL_DISPLAYEVENT */
Uint32 type; /**< In milliseconds, populated using SDL_GetTicks() */
Uint32 timestamp; /**< The associated display index */
Uint32 display; /**< SDL_DisplayEventID */
Uint8 event;
Uint8 padding1;
Uint8 padding2;
Uint8 padding3;/**< event dependent data */
Sint32 data1; } SDL_DisplayEvent;